Atomic behaviors in PdRu solid-solution nanoparticles on CeO2-ZrO2 support for the three-way catalytic reaction
Understanding the behavior of noble-metal catalysts is a key point of catalysis research aimed at reducing the environmental and economic costs associated with the increased use of automobiles. In this study, the atomic-behaviors of Ru and Pd atoms in PdRu solid-solution nanoparticles (NPs) supported on CeO 2 -ZrO 2 (CZ) as a Rh-free three-way catalyst in a modeled three-way catalytic reaction (TWCR) were elucidated using a gas conversion analysis, transmission electron microscopy, and in - situ X-ray absorption fine structure spectroscopy. We found that the PdRu NPs enlarged by the annealing effect separated a smaller grain size with the Pd-rich and Ru-rich phase under TWCR. Most of the oxidation and reduction reactions under the modeled TWCR occurred on the Ru. However, the Pd metals acted as a major role of the reduction of NO gas and oxidation of CO and C 3 H 6 gas. Ru atoms just is a minor role during the modeled TWCR. This study demonstrates the potential of PdRu NPs as a three-way catalyst and reveals the atomic-behavior and catalytic role under the modeled TWCR.
Authors
- Masaaki Haneda (ORCID: https://orcid.org/0000-0002-8842-1234)
- Osami Sakata (ORCID: https://orcid.org/0000-0003-2626-0161)
- Tomokazu Yamamoto (ORCID: https://orcid.org/0000-0002-1016-3802)
- Akhil Tayal (ORCID: https://orcid.org/0000-0001-8152-4209)
- Satoshi Hiroi (ORCID: https://orcid.org/0000-0001-5058-6757)
- Katsutoshi Sato (ORCID: https://orcid.org/0000-0002-3998-7012)
- Okkyun Seo (ORCID: https://orcid.org/0000-0002-8732-0255)
- Hiroshi Kitagawa (ORCID: https://orcid.org/0000-0001-6955-3015)
- Katsutoshi Nagaoka (ORCID: https://orcid.org/0000-0003-1774-1537)
- Jiayi Tang (ORCID: https://orcid.org/0000-0001-5991-9992)
- Chulho Song (ORCID: https://orcid.org/0000-0002-3229-706X)
- Kohei Kusada (ORCID: https://orcid.org/0000-0002-9679-6749)
- Jaemyung Kim (ORCID: https://orcid.org/0000-0002-3298-2972)
- Kazúo Kato
- Syo Matsumura
Institutions
- Kyushu University (JP)
- Nagoya Institute of Technology (JP)
- Kyoto University (JP)
- Deutsches Elektronen-Synchrotron DESY (DE)
- Nissan (Japan) (JP)
- Japan Synchrotron Radiation Research Institute (JP)
- Nagoya University (JP)
Publication Details
- Journal
- Materials Today Catalysis
- Published
- 2024-11-26
- DOI
- https://doi.org/10.1016/j.mtcata.2024.100078
- Citations
- 2
- Primary Topic
- Catalytic Processes in Materials Science
- Type
- article
- Field-Weighted Citation Impact
- 0.23
Funders
- Japan Society for the Promotion of Science
- Japan Science and Technology Agency